Dark Ducks

Dark Ducks is a male chorus group consisting of: Takamizawa Hiromu (高見澤宏, born November 9, 1933) Sasaki Tooru (佐々木行, born February 18, 1932) Kisou Tetsu (喜早哲, born November 8, 1930) Tooyama Hajime (遠山一, born Mai 26, 1930) (Source: AniDB)